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https://issues.apache.org/jira/browse/CASSANDRA-19495?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=17833470#comment-17833470
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Stefan Miklosovic commented on CASSANDRA-19495:
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I'll merge this on Friday if there is no feedback.
> Hints not stored after node goes down for the second time
> ---------------------------------------------------------
>
> Key: CASSANDRA-19495
> URL: https://issues.apache.org/jira/browse/CASSANDRA-19495
> Project: Cassandra
> Issue Type: Bug
> Components: Consistency/Hints
> Reporter: Paul Chandler
> Assignee: Stefan Miklosovic
> Priority: Urgent
> Fix For: 4.1.x, 5.0-rc, 5.x
>
> Time Spent: 50m
> Remaining Estimate: 0h
>
> I have a scenario where a node goes down, hints are recorded on the second
> node and replayed, as expected. If the first node goes down for a second time
> and time span between the first time it stopped and the second time it
> stopped is more than the max_hint_window then the hint is not recorded, no
> hint file is created, and the mutation never arrives at the node after it
> comes up again.
> I have debugged this and it appears to due to the way hint window is
> persisted after https://issues.apache.org/jira/browse/CASSANDRA-14309
> The code here:
> [https://github.com/apache/cassandra/blame/cassandra-4.1/src/java/org/apache/cassandra/service/StorageProxy.java#L2402]
> uses the time stored in the HintsBuffer.earliestHintByHost map. This map is
> based on the UUID of the host, but this does not seem to be cleared when the
> node is back up, and I think this is what is causing the problem.
>
> This is in cassandra 4.1.5
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